<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<script src="https://unpkg.com/vue@next"></script>
<div id="app">
    <input type="radio" id="A" value="A" v-model="picked"/>
    <label for="A">A</label>
    <input type="radio" id="B" value="B" v-model="picked">
    <label for="B">B</label>

    <span>cur picked {{picked}}</span>
</div>
<script>
    const vueOpt = {
        data(){
            return {
                picked: ''
            }
        }
    }

    Vue.createApp(vueOpt).mount('#app');
</script>

</body>
</html>
